Question: Seepage through embankments in an earthen dam is controlled by_______________?

• 1. drainage filters
• 2. relief wells
• 3. drain trenches
• 4. provision of downstream berms

Question: As compared to gravity dams, earthen dams__________________?

• 1. are costlier
• 2. are less susceptible to failure
• 3. require sound rock foundations
• 4. require less skilled labour

Question: The maximum permissible eccentricity for no tension at the base of a gravity dam is__________________?

• 1. B/2
• 2. B/3
• 3. B/4
• 4. B/6

Question: The major resisting force in a gravity dam is___________________?

• 1. water pressure
• 2. wave pressure
• 3. self-weight of dam
• 4. uplift pressure

Question: Horizontal acceleration due to earthquake results in______________?

• 1. hydrodynamic pressure
• 2. inertia force into the body of the dam
• 3. both (A) and (B)
• 4. none of the above

Question: The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after_____

• 1. 50 years
• 2. 150 years
• 3. 200 years
• 4. 250 years

Question: For a flood control reservoir, the effective storage is equal to_______________?

• 1. useful storage – valley storage
• 2. useful storage + surcharge storage
• 3. useful storage + surcharge storage + valley storage
• 4. useful storage + surcharge storage -valley storage

Question: The useful storage is the volume of water stored in the reservoir between________________?

• 1. minimum pool level and maximum pool level
• 2. minimum pool level and normal pool level
• 3. normal pool level and maximum pool level
• 4. river bed and minimum pool level

Question: A deep well_________________?

• 1. is always deeper than a shallow well
• 2. has more discharge than a shallow well
• 3. is weaker structurally than a shallow well
• 4. both (A) and (B)

Question: If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by_______________?

• 1. T = kd
• 2. T = k/d
• 3. T= Vkd
• 4. k= VTd